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What's happening at Aston Villa?

Grealish, much to his credit did not react to the attack, but his claret and blue teammates all quickly converged on the individual.

Fortunately, the Villa captain appeared to escape the incident without injury.

Former Manchester Untied player Danny Higginbotham labelled the attack "disgusting" on Sky Sports.

Police have released a statement on social media, reading: "ARREST: Following the incident on the pitch involving an attack on an Aston Villa player; a man has been arrested and en route to a custody block. Further details to follow."

Blues had started the derby on the front foot, but the incident will obviously overshadow a lot of the day's action.

It will surely lead to further sanctions for the club from the Football Association in the coming days.